---
title: "Accuracy Evaluation"
metatags:
  description: "Complete guide for SGLang model accuracy evaluation on Ascend NPU using EvalScope, covering text/multimodal scenarios."
---

# Ascend NPU Accuracy Evaluation

This document describes how to perform accuracy evaluation for SGLang models running on Ascend NPU using a tool: **EvalScope**. The following scenarios are covered:

- **Online Testing**: Evaluate via API interface after starting SGLang server
- **Text Models**: Using Qwen2.5-7B-Instruct as example
- **Multimodal Models**: Using Qwen2.5-VL-7B-Instruct as example

---

## Environment Setup

<Warning>
Ensure sufficient disk space before proceeding. The Docker image requires at least **30GB** of free space. If you need to download model weights, check the model size at [ModelScope](https://www.modelscope.cn/models) to reserve enough space.
</Warning>

First, launch the SGLang environment using the provided container image:

<Tabs>
  <Tab title="Atlas 800I A3">

```shell Command
export IMAGE=quay.io/ascend/sglang:cann9.0.0-a3-v0.5.16

docker run -it --rm --privileged --network=host --ipc=host --shm-size=16g \
    --device=/dev/davinci0 --device=/dev/davinci1 --device=/dev/davinci2 --device=/dev/davinci3 \
    --device=/dev/davinci4 --device=/dev/davinci5 --device=/dev/davinci6 --device=/dev/davinci7 \
    --device=/dev/davinci8 --device=/dev/davinci9 --device=/dev/davinci10 --device=/dev/davinci11 \
    --device=/dev/davinci12 --device=/dev/davinci13 --device=/dev/davinci14 --device=/dev/davinci15 \
    --device=/dev/davinci_manager \
    --device=/dev/hisi_hdc \
    --volume /usr/local/sbin:/usr/local/sbin \
    --volume /usr/local/Ascend/driver:/usr/local/Ascend/driver \
    --volume /usr/local/Ascend/firmware:/usr/local/Ascend/firmware \
    --volume /etc/ascend_install.info:/etc/ascend_install.info \
    --volume /var/queue_schedule:/var/queue_schedule \
    --volume ~/.cache/:/root/.cache/ \
    --entrypoint=bash \
    $IMAGE
```

  </Tab>
  <Tab title="Atlas 800I A2">

```shell Command
export IMAGE=quay.io/ascend/sglang:cann9.0.0-910b-v0.5.16

docker run -it --rm --privileged --network=host --ipc=host --shm-size=16g \
    --device=/dev/davinci0 --device=/dev/davinci1 --device=/dev/davinci2 --device=/dev/davinci3 \
    --device=/dev/davinci4 --device=/dev/davinci5 --device=/dev/davinci6 --device=/dev/davinci7 \
    --device=/dev/davinci_manager \
    --device=/dev/hisi_hdc \
    --volume /usr/local/sbin:/usr/local/sbin \
    --volume /usr/local/Ascend/driver:/usr/local/Ascend/driver \
    --volume /usr/local/Ascend/firmware:/usr/local/Ascend/firmware \
    --volume /etc/ascend_install.info:/etc/ascend_install.info \
    --volume /var/queue_schedule:/var/queue_schedule \
    --volume ~/.cache/:/root/.cache/ \
    --entrypoint=bash \
    $IMAGE
```

  </Tab>
</Tabs>

---

## Using EvalScope

[EvalScope](https://github.com/modelscope/evalscope) is a comprehensive model evaluation framework from ModelScope, supporting both accuracy evaluation and performance stress testing.

### Install EvalScope

```shell Command
# Method 1: Installing via pip
pip install evalscope

# Method 2: Installing from source
git clone https://github.com/modelscope/evalscope.git
cd evalscope/
pip install -e .
```

### Online Text Model Testing

This section covers online evaluation scenarios where the SGLang server is already running.

#### Start SGLang Server

```shell Command
# Set HuggingFace mirror (if network access is restricted)
export HF_ENDPOINT=https://hf-mirror.com

# Start text model server
sglang serve --model-path /home/weights/Qwen2.5-7B-Instruct --attention-backend ascend --host 0.0.0.0 --port 30000 &
```

For more details of SGLang server, refer to the [Ascend NPU Quick Start](/docs/hardware-platforms/ascend-npus/getting-started/quick_start)

#### Execute Accuracy Evaluation

EvalScope connects to the SGLang server via OpenAI-compatible API. The following example uses the GSM8K dataset:

```shell Command
evalscope eval \
 --model /home/weights/Qwen2.5-7B-Instruct \
 --api-url http://localhost:30000/v1 \
 --api-key EMPTY \
 --eval-type openai_api \
 --datasets gsm8k \
 --limit 10
```

Upon completion, results similar to the following will be displayed:

```text
+---------------------+-----------+----------+----------+-------+---------+---------+
| Model               | Dataset   | Metric   | Subset   |   Num |   Score | Cat.0   |
+=====================+===========+==========+==========+=======+=========+=========+
| Qwen2.5-7B-Instruct | gsm8k     | mean_acc | main     |     5 |     1.0 | default |
+---------------------+-----------+----------+----------+-------+---------+---------+
```

> **Note**: Output format may vary slightly across different EvalScope versions. The above example is from EvalScope 1.6.x. Ensure the `--model` parameter matches the model name returned by the SGLang server's `/v1/models` endpoint. When starting the server with an HF path (e.g., `Qwen/Qwen2.5-7B-Instruct`), use that path directly. For local paths, pass the full path or the model name returned by `/v1/models`.

#### Common Datasets for Online Evaluation

```shell Command
# MMLU
evalscope eval \
 --model /home/weights/Qwen2.5-7B-Instruct \
 --api-url http://localhost:30000/v1 \
 --api-key EMPTY \
 --eval-type openai_api \
 --datasets mmlu

# CEval (Chinese evaluation)
evalscope eval \
 --model /home/weights/Qwen2.5-7B-Instruct \
 --api-url http://localhost:30000/v1 \
 --api-key EMPTY \
 --eval-type openai_api \
 --datasets ceval

# MATH-500
evalscope eval \
 --model /home/weights/Qwen2.5-7B-Instruct \
 --api-url http://localhost:30000/v1 \
 --api-key EMPTY \
 --eval-type openai_api \
 --datasets math_500

# HumanEval (code generation)
evalscope eval \
 --model /home/weights/Qwen2.5-7B-Instruct \
 --api-url http://localhost:30000/v1 \
 --api-key EMPTY \
 --eval-type openai_api \
 --datasets humaneval
```

### Online Multimodal Model Testing

#### Start Multimodal Model Server

```shell Command
# Start multimodal model server (Qwen2.5-VL-7B-Instruct)
# Multimodal models require both --attention-backend and --mm-attention-backend
sglang serve --model-path /home/weights/Qwen2.5-VL-7B-Instruct \
    --attention-backend ascend \
    --mm-attention-backend ascend_attn \
    --host 0.0.0.0 --port 30000 &
```

#### Execute Multimodal Accuracy Evaluation

```shell Command
# MMBench (multimodal evaluation)
evalscope eval \
 --model /home/weights/Qwen2.5-VL-7B-Instruct \
 --api-url http://localhost:30000/v1 \
 --api-key EMPTY \
 --eval-type openai_api \
 --datasets mm_bench

# MMMU (multimodal comprehensive understanding)
evalscope eval \
 --model /home/weights/Qwen2.5-VL-7B-Instruct \
 --api-url http://localhost:30000/v1 \
 --api-key EMPTY \
 --eval-type openai_api \
 --datasets mmmu

# HallusionBench (hallucination evaluation)
evalscope eval \
 --model /home/weights/Qwen2.5-VL-7B-Instruct \
 --api-url http://localhost:30000/v1 \
 --api-key EMPTY \
 --eval-type openai_api \
 --datasets hallusion_bench
```

For more details, refer to the [EvalScope documentation](https://evalscope.readthedocs.io/).

---

## Troubleshooting

### SGLang Server Startup Failure

1. Verify device mapping: A2 uses `davinci[0-7]`, A3 uses `davinci[0-15]`
2. Confirm image tag matches device type: A2 uses `...-910b`, A3 uses `...-a3`
3. Check NPU status with `npu-smi info`
4. First run requires model download; set `HF_ENDPOINT=https://hf-mirror.com` if network access is restricted

### EvalScope Connection Failure to Server

1. Confirm SGLang server started successfully (look for `Application startup complete` in logs)
2. Verify `--api-url` points to the correct port (SGLang defaults to `30000`)
3. Ensure URL ends with `/v1`, e.g., `http://localhost:30000/v1`

### EvalScope SSL certificate verification failed

When using EvalScope commands without specifying a dataset or model path, it will attempt to download automatically, which may encounter an SSL certificate verification error:

```text
  File "/usr/local/python3.11.14/lib/python3.11/site-packages/requests/sessions.py", line 605, in get
    return self.request("GET", url, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/python3.11.14/lib/python3.11/site-packages/requests/sessions.py", line 592, in request
    resp = self.send(prep, **send_kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/python3.11.14/lib/python3.11/site-packages/requests/sessions.py", line 706, in send
    r = adapter.send(request, **kwargs)
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/python3.11.14/lib/python3.11/site-packages/requests/adapters.py", line 676, in send
    raise SSLError(e, request=request)
requests.exceptions.SSLError: HTTPSConnectionPool(host='www.modelscope.cn', port=443): Max retries exceeded with url: /api/v1/datasets/AI-ModelScope/gsm8k (Caused by SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: self-signed certificate in certificate chain (_ssl.c:1016)')))
[ERROR] 2026-05-13-02:20:01 (PID:876, Device:-1, RankID:-1) ERR99999 UNKNOWN application exception
```
**Temporary workaround (test only):**
Navigate to `/usr/local/python3.11.14/lib/python3.11/site-packages/requests/sessions.py`, find the `class Session` definition, and set `self.verify = False`.

<Warning>
This **disables TLS certificate validation globally** for the Python `requests` library. Use it **only as a temporary diagnostic step** in isolated test environments — never in production.
</Warning>

**Stable solution:**
The error is caused by a corporate TLS proxy injecting a self-signed certificate. Point `requests` to the proxy's CA bundle:

```shell
# Obtain the CA certificate from your network administrator
# Then set the environment variable:
export REQUESTS_CA_BUNDLE=/path/to/your-proxy-ca-bundle.crt
```

<Note>
This is a common workaround for corporate proxy environments. If it does not resolve your issue, consult your IT department — proxy configurations vary across organizations.
</Note>

If you cannot obtain the CA certificate, download datasets manually as shown in [Download Dataset Error](#download-dataset-error) below.

### EvalScope Request Retry Timeout
If EvalScope keeps retrying requests with errors like:
```
2026-06-22 03:09:03 - evalscope - WARNING: Attempt 4 / 5 failed: ....... Retrying...
2026-06-22 03:09:14 - evalscope - INFO: Evaluating[ceval]   0%| 0/520 [Elapsed: 02:00 < Remaining: ?, ?it/s]
2026-06-22 03:09:19,557 - openai._base_client - INFO: Retrying request to /chat/completions in 0.447260 seconds
2026-06-22 03:09:26,088 - openai._base_client - INFO: Retrying request to /chat/completions in 0.992551 seconds
```
This is usually caused by the HTTP proxy intercepting requests to the local SGLang server. Disable the proxy with:
```shell Command
unset http_proxy
unset https_proxy
unset HTTP_PROXY
unset HTTPS_PROXY
```

### Download Dataset Error

For this error

```text
root@localhost:/home/# wget https://www.modelscope.cn/datasets/evalscope/MMStar/resolve/master/MMStar.tsv
--2026-05-12 12:08:01--  https://www.modelscope.cn/datasets/evalscope/MMStar/resolve/master/MMStar.tsv
Connecting to <PROXY_IP>:<PROXY_PORT>... connected.
ERROR: cannot verify www.modelscope.cn's certificate, issued by ‘<CERT_ISSUER>’:
  Self-signed certificate encountered.
To connect to www.modelscope.cn insecurely, use `--no-check-certificate`.
```

You can add `--no-check-certificate`

```bash
wget https://www.modelscope.cn/datasets/evalscope/MMStar/resolve/master/MMStar.tsv --no-check-certificate
```

For additional assistance, refer to [SGLang GitHub Issues](https://github.com/sgl-project/sglang/issues).
